Milk dispenser



Jan. 9, 1940. w. TAMMINGA MILK DISPENSER Filed July 30, 1937 &\\\\\\\ATTORNEY.

INyENTol-z.

BY /m 'i'.lpensins Patented Jan. 9, 1 940 UNITED STATES rmx DISPENSERwmnm Tamminga, New York, N. Y., minor te n 'Monitor Process Corporation,a corporation of New Jersey Application July 30, 1937, Serial No.156,467`

I 48 Claims.

' This invention relates to devices such as liquid dispensers and hasparticular reference to milk l 10 sion of a device of the nature setforth wherein the liquid is dispensed at will, and air for agitating theliquid periodically charged into the device, including a telescopicdispensing unit having a simplified valve means received therein andarranged so that parts of the unit may be directly inserted into theliquid container for cleaning or sterilizing therewith.

Another object of the invention is tox provide improved means such that.all'parts of the disunit which come in contact .with the liquid sii'allbe so connected with the liquid container as to be reshipped therewithto the bottling or milk plant for cleaning. Other objects of theinvention are to -provide a. '86. dispensing unit having an improvedcheck valve operative as a closure for a liquid container in course ofshipment thereof; an improved combined check andslide valve havinganannular iiange for uniform iiow of liquid past the valve; I0improved-means for releasably locking a slide tube to the container;improvedmeans for removably retaining the valve unit ln the slide tube:improved means for releasably locking a handle to the valve unit;.improved means such -35 that the handle constitutes a part of the airflow passage; improved means for swingably mounting the handle improvedmeans whereby the ai!" connection is movable withthe handle withoutdisturbing the handle lock; improved means 40 whereby the air connectionincludes means for reti-acting the liquid valve; improved means lwherebythe air connection is arranged so as to avoid any interference with theslide tube; and. further, an improved arrangement such that the 45features mentioned are wholly consistent with the telescopic principleaforementioned.

Another object of the invention is to furnish a liquid dispensercomprising gaseous agitating means for the liquid according to animproved iiarrangement and construction such that the gas or air iscirculated through thev dispenser and a normally closed refrigerator forthe liquid container, whereby the air may be kept clean and used as aheat conducting medium to increase the.

66 refrigerating eiiiciency.

A further object of the invention is to provide a device havingrelatively few and simple parts and which is inexpensive to manufactureand assemble, durable, convenient, rapid and emcient in use andespecially adapted to meet the re- 5 quirements of the most rigidsanitary code.

Other objects and advantages of the invention willj become apparent asthe speciiication proceeds.

In the drawing: 10

Figure 1 is a view in vertical section showing a device embodying theinvention.

2 is anenlarged sectional view of the main portion of the dispensingunit.

Fig. 3 is a sectional view `taken on 3-3 of Fig. 2.

Fig. 4 is a fragmentary sectional view of a portion of the dispensingunit collapsed for shipment.

Fig. 5 is a sectional view taken on the broken line 5-5 of Fig. 4.'

The advantagesof the invention as here outlinedv are best realized whenall of its features and instrumentalities are combined in one and thesame structure, but, useful devices may be produced embodying less thanthe whole.

' It will be obvious to those skilled in the art to which the inventionappertains, that the same may be incorporated in several diiferentconstructions. The accompanying drawing, there- 3p` fore, is submittedmerely as showing the prethe line ferred exemplication of the invention.

Referring in detail to the drawing, illv denotes a liquid dispenserembodying the invention. 'I'he same may also be considered as a combinedre- 35'* frigerating, agitating and liquid dispensing device. A It mayinclude a refrigerator chamber il having a front door I2 hingedlyvmounted so as to be swingable about a vertical side Iedge thereof.Within the chamber Il is a refrigerato ing unit I3 and an air illter il,the latter for a purpose 'hereinafter described. Mounted on the chamberIl is an air pump I5 having its inlet connected by a pipe i6 with thefilter i4. From the outlet of the pump extends a pipe I1 which 4tlg.'

enters the chamber ii and is connected by aA piece of flexible tubing i8with a pipe i9 that may be embedded in the door i2. 'I'he pipe I9 maycommunicate with a liquid dispensing unit f 2li that isoutwardly mountedon the door i2 and 50 connected with a liquid or milk container 2l.Closing the container 2| is a removable loosely fitting cover Ziaattached to the container by a breakable seal 2lb.

Upon operation ofl the pump i5, -air flows through the line I1, I8, I9and the dispensing unit 28 into the container 2l to agitate the liquidtherein. Hence the air escapes at the loosely fitting cover 2I a intothe chamber Il, is received in the filter (I4 and recirculated. Theflexible connection I8 allows the door I2 to be opened and closed, andis preferably located near the door hinge to permit the use of a shortpiece of rubber hose;

'Ihe pipe I9 is connected to the inner end of a tubular casing 22 whichis amxed to the door I2. Closing the outer end of the casing 22 is abushing 22a through which is slidable a hollow stem 23 which carries atits inner end any suitable packing 23a, such as an expandible leathercup. Securing the latter to the stem 23 is a hollow screw element 24which is adapted to communicate with the pipe I9. For retraction of thestem or tube 23, an expansion coil spring 25 may extend around the samewithin the casing 22 so as to act between the bushing 22a and a washer26 which forms a backing for the packing 23a. The relation of the casing22 and its associated parts is coaxial.

Mounted on the casing 22 is a bracket or plate 21 secured by a set screw28. As shown in Fig. 3, this bracket may receive the casing 22 in anopening thereof and may have a cut out 29 in its lower portion for apurpose hereinafter described.

The container 2| is provided near its bottom with a permanentlyconnected inward extending bushing 38 having at its inner end aninturned annular lip 3l, to thus retain an inner packing ring 32 and atubular element 33. At its forward end, the bushing 38 may have a shortradial tongue 34 to retain the element 33. The latter may have alongitudinal slot or recess 35 so that when the element 33 is turned tobring the slot into register with the tongue 34, the element 33 may beremoved.

Disposed within the elements 32, 33 is a slide tube 36, retained inliquid tight relation by the packing 32. At its inner end, the slidetube 36 may have a stop pin 31 to limit its outward movement as shown inFig. 2. At its forward end, the slide tube may have an annularenlargement 36. which, in the retracted position of the slide tube shownin Fig. 4, is receivable in an annular cut out or recess 39 of theelement 33, the rest of the slide tube projecting inward into thecontainer 2|. For withdrawing the slide tube 36 from retracted position,the latter may have along its internal surface near its forward end oneor 'more bayonet slots 48 or the like so that a tool may be inserted toengage the slide t'ube 36. As shown in Fig. 2, the slide tube extendsoutward through an opening 4I in the door I2, said opening being closedby a removable ring packing -42, split at 43.

Within the forward end portion of the slide tube 36 is reciprocable avalve unit 44 that controls a liquid outlet opening in the slide tube.

The said valve preferably consists of rubber and is of generally tubularform with a dametral end projection 46 longitudinally slitted at 41a.Surrounding the projection 46 is an integral annular reenforcing flowcontrolling or directing flange 41 which projects somewhat beyond theportion 46. At its other end, the valve may have an annular inturned lip48 removably engageable around a hollow neck 49 of anipple 58. At itsforward end the latter may'have an internal annular slot 5I forattachment to an actuator as hereinafter described.

To aid in valve sealing action, the slide tube 36 may have an annularrecess 0r seat 52 for the valve, forming an annular shoulder 53 forabutment with the flange 41. As a stop to limit lnward movement of thevalve, the slide tube may have an annular recess 54 forming an annularshoulder 55 for abutment with an edge of the nipple 58. The arrangementis such that the valve and nipple can be withdrawn as a unit from theslide tube 36 at the forward end thereof.

Since the unit 44, 58 is preferably freely slidable in the tube 36, andthere may be considerable liquid pressure on the valve 44, somereleasable means may be desirable to prevent the valve, during shipmentof the container 2l, from accidentally moving outward and opening theoutlet 45. Hence the slide tube 36 may have a slot 56 for snuglyreceiving a plate 51 that is in the form of a segment of a circle, saidplate being positioned as shown in Fig. 4 to project into the tube 36asld form an abutment for the end of the nipple An actuator 56 for thevalve unit 44 forms a combined air iiow passage, and a means forautomatic positive locking engagement with the nipple 58, and preferablyalso automatically wholly or partially dislodges the wedge or stopelement 51. Said actuator may be mounted on a tube 66 rigidly connectedto the forward end of the air flow tube 23, and may include a couplingtube 68 rigidly connected tothe tube 59 and swingable about the axis ofthe tube 23 into and out of alinement with the slide tube 36. The tube68 may have at its forward end an enlargement or knob 6I whereby it maybe caused to move the coupling tube 68 into and out of the slide tube36. and to reciprocate the valve 44, the air ow tube 23 moving with thelatter, and the spring 25 tending to cause closing movement of the valve44. At its inner end, the coupling tube 68 may have an annularly reducedtubular extension 62, that may be slightly conoidal in shape, forinsertion into the nipple 58. At the junction of the extension s2 andthe main parc of the coupling mbe sn is an annular beveled portion 63adapted to act upon the bottom edge of the wedge plate 51 to force thesamev outward to permit projection of the nipple 58. In the wall of theextension 62 are formed diametrlcally opposed holes 64 for receivinglocking ballsl 65 that are adapted to enter the groove 5I of the nippleas hereinafter described.

For actuating the balls 65, the coupling tube 68 may have a rod 66slidable therein having at its inner end an annular enlargment or cam 61such that when the rod is moved forward the cam presses the balls 65outward into the groove 5I, and when the rod is moved inward, the rodaffords an. annular space for balls to move inward out of the groove 5I,but with the rod being of sumcient diameter to prevent the balls fromleaving their holes 64 and dropping into the coupling tube 68. The rodand its cam are smallei than the internal diameter of the coupling tubeto form an annular air passage 68 between the tube 59 and the nipple 56.If d esired, the holes 64 may be outwardly tapered to permit the balls65 to move suitably outward but without falling out of the said holes 64when the coupling tube is removed from the slide tube 36.

As a control for the rod 66, the'knob 6I may be centrally chambered at69 to receive a forward end 18 of the rod 66, an expansion coil spring1| extending arolmd the element 18 and acting between a stop disc 12 xedto the element 18 and a knob wall 13 in which-the element 18 is snuglyslidable. Movement of the rod 66 by the spring knob wallv13.

' or stem 60 pulls outward on the .nipple 50 andl 'Iheoperation of thedevice will now be described. When the operator requires milk, he

pulls outward on the knob 6| so that the'coupling hence on the valveunit 44 so that the latter opens the outlet 45. Liquid may now flow fromthe container 2| through the slide tube 35 to the outlet 45. The ilange41 causes a uniform flow of liquid. Assume that this flange wereomitted, the projection 46 might be vertical or at an angle orhorizontal as shown. In the latter position, this projection 46 wouldextend over the outlet 45 and cause a swirling or splashing flow oftheliquid.'

Thus the character of the flow would vary from time to time. Furtherretraction of the valve 44 is undesirable because compactness demands ashort throw' of the valve. The flange 41 also serves as a reenforcementfor the'proj ecting check valve portion 45 and tends to prevent bucklingthereof.

In moving the knob 6| outward, the tubular elements 59 and 23 movecorrespondingly outward but the air passages are maintained. When theknob is released, the spring 25 causes a reverse movement. of the partsand the valve 44 closes in abutment with the sealing shoulder 53.

At certain'time intervals, the pump I5 is-manually or automaticallycaused to operate to pump air through the pipes I1, I9, 22, 59, throughthe annular passage 68, nipple into the valve 44. In fact, the device I5may be regarded kas an automatic intermittently operating compressor.

Thus expansion is caused of the slitt'ed check valve projection 46; sothat the air flows through the slide tube 36 and into the container 2|to bubble upward through the liquid and agitate the same. The air leavesthe container at the loose fitting cover 2|a and flows into therefrigerator I| where it enters-the filter I 4 to be` recirculated. Thusthe air is kept clean. and cold air'from the neighborhood of the coolerI3 is circulated through the liquid to increase refrigerationeiiiciency. f

Thel check valve' 45 closes automatically to prevent liquid from flowinginto the valve 44.

If all the milk in the container has been consumed,l the operatorpresses the disc 12 inward so as to inwardly move the rod 66 andpermitthe balls to release the nipple 50. In this position the knob 6| ispulled outward to withdraw the coupling- 60 from the slide tube 36.Nowthe coupling 60 is swung laterally about the axis of the tube 23.Thecontainer 2| may now be moved laterally to move the tube 33 out ofthe opening 29 of the bracket 21. Then the slide tube i 36 is pushed allAthe way into the container as shown in Fig. 4, and the container isshipped 4to the bottling or milk plant;

' There the tube 33 is turned to aline the recess 35 with the tongue 34,and the tube 33 is withdrawn. This permits removal of the packing 32 andthe slide tube 36. Thel valve 44 may be re-v moved and cleaned. Now theparts 44, 50, 36,'

32, 33 are reassembled with the container 2|, the wedge stop plate 51having been inserted to be thus retained by the element 33. A dust coverplate 15 may be forced into the element 33. "ihe container and its partsare then sterilized, filled with liquid, closed and sealed at 2lb, andthe container is shipped out. l

Upon receipt of the container 2|, the disc 15 is pried out, and a toolengaged with the bayonet tube 35 may be pulled The nipple' 50. may havea filter 50a disposed therein and held bythe tube 5I. This filter shouldb e replaced daily. I

I claim:

1.'v A liquid dispenser including a. container having an outlet member,a movable valve in said member for controlling the same, saidvalvehaving an integral elastic automatically closing'hollow portion,means for forcing a gaseous fluid through said valve portion into thecontainer through said member, said valve portion being adapted to actas a check valve to prevent liquid from flowing thereinto.

2. A liquid dispenser including a container, an outlet tube connected tothe container so as to be slidable thereinto, said-outlet tube having alateral opening, a hollow' rubber valve slidable in the tube for closingsaid opening, said valve having a projecting slitted check valve portionwhich is self closing to prevent liquid from flowing v into the valve,and means for forcing a flow of air into the container through the checkvalve portion.

3. A dispensing device including a liquid container,` an outlet tubeconnected thereto so -as to be slidable into the container, means forsupplying a gaseous uid to the containerA through said tube, and elasticpiston valve means in the tube for controlling outflow of liquid andhaving a slitted self closing portion for permitting inflow of thegaseous fluid while preventing outflow of liquid, said valve means beingat all times normally housed in the tube, and the latter having a liquidoutlet controlled by sliding movement of the valve means.

4. A dispensing device including a liquid container, an outlet tubeslidably connected thereto, means for supplying air under pressure tothe container through said tube, and a hollow rubber valve movable inthe tube to control a lateral outlet opening thereof, said valve, inopen position, being located 4on a side of the outlet opening furthestfrom the container, said valve having a slitted self closing portionprojecting toward the container, said valve having an annular flangearound said valve portion for controlling the liquid ilow through saidoutlet opening, and the air .pressure being adapted to open said valveportion. y

b. A dispensing device including a container, a valve controlledslidableoutlet tube, and means slidably connecting the latter with thecontainer, including elementsreleasably interlocked, one of the elementsbeing removable and serving to retainaI packing ring about theproutlettube, the other element being connected to the container, and the tubehaving meansto prevent removal of the tube withoutvremoval ofthe-removable element. V

6. A dispensing device including a liquid conwithin the container whenthe vtube is moved thereinto, said valve having a self closing portionto control admission of a gas to the container, and a detachable hollowgas supply stem for the valve communicating with said portion.

7. A liquid dispenser including a container, an outlet tube connected tothe container so as to slide wholly into the same and outward thereof,and an elastic discardable valve unit including a valve portion tocontrol outflow of liquid from the tube and inflow of air pressure intothe tube, said valve unit being housed removably in the tube, a nippledetachably connected to the valve unit, a hollow air supply stem for thelatter, an externally accessible means detachably locking the stem tothe nipple.

8. A liquid dispenser including a container, an outlet tube connected tothe container for sliding thereinto, an elastic piston type valve forcontrolling said tube and having a self closing air inlet portion, andmeans for releasably retaining the valve in the tube against relativeopening movement of the valve, said means having direct positive lockingengagement with the tube in a recess thereof.

9. A liquid dispenser including a refrigerator, a liquid containertherein, air propelling means, and means to cause the air propellingmeans to circulate air from the refrigerator through the container tocause cold air to agitate the liquid in the container.

10. A liquid dispenser including a container, an outlet tube slidablyconnected thereto, a valve for said tube, means for supplying airpressure to said tube, including a tubular element releasably coupledwith the valve for operating the Same.

l1. A dispensing device including a container having an outlet tube anda valve therein, an actuator for the valve having releasable means forpositive connection with the valve, said means including a ilrst memberhaving an opening and a lock element therein, a second member having camcoaction with the lock element, and said members being relativelymovable to control the lock element, the valve having a recess portionengageable by the lock element, and means urgingone of said members tocause locking movementvof the lock element, and said outlet tube havingguiding coaction with one of the members.

12. A dispensing device including a container having a tube having aside outlet, a valve for controlling said outlet, said valve having anautomatically closable check valve portion open- Vable by a ilow of gasthrough said tube into the container, a valve stem having a passage forconducting said gas to said valve portion, and an element in the stempassage for causing releasable connection between said stem and saidvalve.

13.,A liquid dispenser including a container having an outlet, a slidevalve for controlling said outlet, a telescopic air connection forsupplying air to the valve, the valve having a valve portion to controlow of said air into the container, and a tubular stem for the valveconnected to a movable element of the telescopic connection.

14. A dispensing device including a liquid container having an outlet, avalve for the outlet, a releasable lock to hold the valve closed, and anactuator for the valve detachably connected thereto and coacting withthe lock to release the same upon connecting the actuator to the valve.

15. A dispensing device including a liquid container, an outlet tubeslidably connected thereto, a valve for said tube, a refrigeratoradapted to receive the container, and an actuator for the valvepermanently mounted on the refrigerator and being detachably engagedwith the valve.

16. A dispensing device including a container having an outlet and avalve controlling the same, means for charging air into the containerthrough said outlet, said means having a rotatable joint, and adetachable acutator for the valve alined therewith and being mounted ona portion of said joint so as to be swingable into and out of alinementwith the valve.

17. A liquid dispenser including a container, an outlet tube connectedto the container so as to be slidable thereinto, a valve in the tube,means for releasably locking the valve in closed position, and the tubebeing rotatable and having means for rotatably releasably locking thetube to the container when the tube is slid into the container.

18. A liquid dispenser including a container having an outlet member, anelastic piston valve, ,said member having a side outlet closable by saidvalve, the latter being hollow and having a slitted self closing axialprojection, means for forcing a gas into the container with theprojection being opened by the pressure of the gas, and said valvehaving a generally annular flange partially spaced from and surroundingsaid projection so that the latter lies substantially Within the spacedefined' by the iiange, said flange having generally circular contactwith the outlet member so as to control the degree of opening of theside outlet.

19. A liquid dispenser including a container, an outlet tube slidablethereinto, a valve in the tube, said valve having a self closing portionforadmitting air into the container while preventing the outflow ofliquid, a hollow stem for the valve adapted to supply air thereto, saidstem being alined with the valve, and means for detachably locking thevalve to the stem, said means .including an actuator extending andmovable longitudinally of the stem so as to be accessible adjacent tothe free end of the stem.

20. A liquid dispenser including a container having an outlet,'a slidevalve for controlling the outlet, the valve having a valve portion tocontrol the flow of a gas into the container, a tubular stem for thevalve, a telescopic connection for supplying gas to said valve portionthrough said stem, said telescopic connection having a part thereofconnected to the stem, and a spring in said telescopic connectionactuating said part to close the valve.

21. A liquid dispenser including a container having an outlet, a slidevalve for controlling the outlet, the valve having a valve portion tocontrol the flow of a gas into the container, a tubular stem'for the'valve, a telescopic connection for supplying gas to said valve portionthrough said stem, said telescopic connection having a part thereofconnected to the stem, said telescopic connection having stop means tolimit the movement of said part and thus to limit the opening movementof the valve, the latter being otherwise freely removable from saidtube.

22. A liquid dispenser including a container having a slidable outlettube having a lateral outlet opening, a discardable elastic piston valvefor controlling said opening and having a self closing air inlet controlportion, a tubular stem detachably connected to the valve, a telescopicconnec- .tion having a member xedly connected to the stem, and means forsupplying air to the valve through said telescopic connection and saidstem.

. arcanes- '23. A liquiddi'spenser including a container,

an outlet tube slidable inward and outward of losaid outlet tube, saidvalve means adapted to serve as a iixed closure for the outlet tube withthe latter in the inward position and while the dispenser illled withliquid is being shipped, means for releasably locking the valve means tou serve as said closure, and said 'valve means being removable from theoutlet tube and being discardable.

24. A liquid dispenser including a container having a discharge tubewith a liquid outlet port,

90 and a movable liquid dispensing valve in said tube for controllingthe dispensing of liquid through said tube and the. port thereof, saidliquiddispensing valve carrying an elastic check valve adapted toautomatically open to permit the pasal sage of gaseous fluid through theliquid dispensing valve into the container and to automatically close toprevent the passage of liquid from the container through the liquiddispensing valve.

25. A liquid dispenser including a container, a

lal) discharge tube slidable through the wall thereof and provided inits outer end portion with a discharge port', a slide valve in said tubefor controlling the dispensing of liquid through said tube and its port,said slide valve carrying an elastic check valve adapted to'automatically open to perxriit the passage of gaseous fluid through theslide valve into the container and to automatically close toprevent thepassage of liquid from the container through the slide valve.

26. A liquid dispenser including a container, a discharge tube slidablethrough the wall thereof and provided with a port intermediate its ends,a slide valve mounted to reciprocate within the tube for the purpose ofopening and closing said port, and means supported on the tube fordetachably locking vthe slide vvalve in port closing position.

27. A liquid dispenser including-a container, a discharge tube slidablethrough the wall there- Vof and provided with an outlet port, a rubberpiston slidable within the tube to open and close said port, a metallicnipple also slidably mounted within the tube and to which nipple therubber piston is secured, and clutchmeans formed on said nipple forreadily detachable engagement with an appropriate valve operatingmember.

28. In an assembly of the character described, a hollow rubber pistonvalve with an integral check valve at one end and open at its other end,and a tubular metal clip coaxial with and having.

a non-axial connection with the rubber piston valve to maintain the clipand valve in assembled relation, said clip having therethrough an axialconduit registering with the hollow confines of the piston valve toprovide for the passage of fluid A through both the clip and valve tothe check valve oi' the latter. Y

29. A single use valve comprising a hollow rub-A ber vpiston having anintegral check valvev at one end,v and a coaxial metal piston detachablysecured to its other end. said metal piston having an air passagetherethrough and the rubber piston having an integral elastic checkvalve adapted to automatically open to permit the-passage of gaseousduid fed thereto through the metal piston and to automatically close toprevent the passage of liquid in a contra direction,

` and clutch means on said metal piston for readily detachableengagement with an appropriate valve operating member..

30.v A single use valve comprising a hollow tu,- bular rubber pistonhaving at one end an annularseat engaging edge and an integral-crossaxial .partition across the interior of the tubular piston member, andan integral cross axial partition across the tubular piston andintermediate said ends thereof, said partition having thereon an elasticcheck valve adapted to automatically open to permit thepassage ofgaseous fluid through the piston inthe direction of said seat engagingedge and to automatically close to prevent the passage of liquidthroughthe piston in a contra direction.

32. A dispensing device including a liquid con tainer, and a dischargetube through the wall of the container having a valve for controllingthe I discharge of liquid. therethrough, in combination with a casingfor the container, means on the casing for actuating the discharge tubevalve, and meansfor detachably locking the valve actuating means on thecasing to the valve in the tube to permit operation of the latter-by theformer.`

33. A dispensing device comprising a container Aprovided with adischarge tube slidable through the wall of the container intoprojecting position and havixg therein a valve, means for normallylocking 'the valve to the tube in sealing position.. a casing for thecontainer, means supported on the casing for securing the tube, when inprojecting position, to the casing, means also supported on th'egcasingfor unlocking the valve from the tube, and means also supported on thecasing-for actuating the valve.

34. A dispensing device including a containerA provided with a dischargetube having therein a valve, means for normally locking the valve to thetube in sealing position, a casing for the container, a door on saidcasing, means supported on the door for unlocking the valve from thetube, l

and means also supported on the door for actuating the valve. l

35. A dispensing device including a container provided with a dischargetube having therein a valve, a casing for the container, a door on thecasing, and valve operating means mounted on the door including meansfor detachably locking the valve operating means to the valve.

36. A dispensing device including a container provided with a dischargetube slidable through the wall of the container into projecting positionand having therein a valve, means for normally locking the valve to thetube in sealing position, a l

ating the 37. A dispensing device including a container provided with adischarge tube slidable through the wall of the container intoprojecting position and having therein a valve, a casing for thecontainer, means supported on the casing for securing the projectingtube thereto, and means also supported on the casing and adapted to bedetachably secured to the valve for the purpose of actuating the latter.

38. A dispensing device including a container provided with alongitudinally slidable discharge tube having a discharge valve, acasing enclosing the container and provided with an opening throughwhich the tube is adapted to project, means supported on the casing forholding the discharge tube against longitudinal movement, a plunger alsosupported on the casing for oscillation and reciprocation, an arm rigidwith saidv plunger, and means carried by the arm to secure the valvethereto, whereby reciprocation of the plunger will operate the valve.

39. A dispensing device including a container provided with a dischargetube having therein a slide valve for controlling the discharge ofliquid therethrough and having a resilient piston, in combination with acasing for the container, means on the casing for actuating thedischarge valve, there being an air passage leading through the valveactuating means on the casing and through the discharge valve throughwhich air may be conducted to the interior of` the outlet tube to therebe discharged into the liquid in said tube, and means for coupling thevalve in the tube to the valve actuating means on the casing with thelatter forming an air-tight joint.

40. A dispensing device including a casing adapted to enclose a liquidcontainer having a valved outlet, and valve operating means mounted onthe casing and including means for detachably locking thevalve'operating means to the valve of such container.

j 41. A dispensing device including a casing adapted to enclose a liquidcontainer having a valved outlet, and valve operating means mounted onthe casing and including means for detachably locking the valveoperating means to the valve of such container, said valve operatingmeans on the casing being provided with a passage therethrough forconveying air under pressure to the valved outlet of such container.

42. A dispensing device including a casing adapted to enclose a liquidcontainer having a valved outlet, valve operating means mounted on thecasing and including means for detachably locking the valve operatingmeans to the valve of such container, said valve operating means on thecasing being provided with a passage therethrough for conveying airunder pressure to the valved outlet of such container, and meanssupported on the casing for supplying air under pressure to saidpassage.

43. A dispensing device including a refrigerator casing adapted to housea container having a valved outlet, valve operating means supported onthe casing and including means to detachably lock the valve operatingmeans to the valve of such container, said valve operating means on thecasing being provided with a passage therethrough for conveying airunder pressure to the valved outlet of such container, means forrefrigerating the interior of the casing, and means for withdrawingrefrigerated air from the interior of the casing and placing the, sameunder pressure and feeding it to said passage of the valve operatingmeans.

44. A dispensing device including a refrigerator casing adapted to housea. container having a valved outlet, valve operating means supported onthe casing and including means to detachablyl lock the valve operatingmeans to` the valve of such container, said valve operating means on thecasing being provided with a passage therethrough for conveying airunder pressure to the valved outlet of such container, means forrefrigerating the interior of the casing, and means for withdrawingrefrigerated air from the interior of the casing and placing the sameunder pressure and feeding it intermittently to said passage of thevalve operating means.

45. A milk dispenser comprising a cabinet, a milk can in said cabinethaving an air outlet in the upper part thereof and above the level ofthe milk therein, a walled duct leading through the wall of the can inthe lower portion thereof and below the liquid level in the can, an airrefrigerating unit and associated air pump coupled to said duct to coolair and feed it through the duct into the lower portion of the can toagitate the milk contained in the can and escape through said outletinto the confines of the cabinet, said refrigerating unit and pump beingarranged to take air from the connes of the cabinet, recool the same andrecirculate it through said duct and can.

46. A milk dispenser comprising a cabinet adapted to detachably receivea milk can, a milk can detachably seated in the cabinet and provided inthe lower portion thereof with an air inlet, means mounted on thecabinet for supplying air to the inlet of the can positioned therein,and means for detachably connecting the air inlet of the can to the airsupply means on the cabinet.

47. A milk dispenser comprising a cabinet adapted to detachably receivea milk can, a milk can detachably seated in the cabinet and provided inthe lower portion thereof with an air inlet having a check valve topermit the passage of air into the can but to preclude retrograde flowof liquid vthrough the check valve, means mounted on the cabinet forsupplying air to the inlet of the can positioned therein, and means fordetachably connecting the air inlet of the can to the air supply meanson the cabinet.

48. A milk dispenser comprising a cabinet adapted to detachably receivea milk shipping can, a milk can detachably seated in said cabinet andprovided in the lower portion of the can with an air inlet passageextending through the wall of the can below the normal liquid levelstherein, a check valve in said passage to admit air under pressure intothe can to agitate the milk in the latter but preclude counter flow ofmilkthrough said check valve, said valve constituting an inherent partof the can assembly when the can is shipped full of milk for bodilyintroduction into the cabinet, means associated with the cabinet forsupplyingair under pressure to said inlet pasnecting theA air inletpassage of the can in the cabinet with said air supply means of thecabinet.

WILLIAM TAMMINGA.

sage of the can, and means for detachably con-

